Stratigraphy and structure of the Argentine Central Andes between 30°and 31°S latitude

In a cross-section through the Argentine central Andes, two large groups of rocks can be distinguished: a Gondwanic (Paleozoic) basement, and an Andean cover. The basement is constituted by marine sedimentary units, intruded by Upper Paleozoic granitoid rocks. The most important Gondwanic structures...

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Autores principales:	Rodríguez Fernández, L.R., Heredia, N., Espina, R.G., Cegarra, M.I.
Formato:	JOUR
Materias:	Andean cordillera Andean orogeny Gondwanic orogeny Tectonic inversion Gondwana orogeny stratigraphy tectonic evolution South America
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_05677505_v32_n1-2_p51_RodriguezFernandez
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_05677505_v32_n1-2_p51_RodriguezFernandez
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spelling	todo:paper_05677505_v32_n1-2_p51_RodriguezFernandez2023-10-03T15:35:51Z Stratigraphy and structure of the Argentine Central Andes between 30°and 31°S latitude Rodríguez Fernández, L.R. Heredia, N. Espina, R.G. Cegarra, M.I. Andean cordillera Andean orogeny Gondwanic orogeny Tectonic inversion Andean orogeny Gondwana orogeny stratigraphy tectonic evolution South America In a cross-section through the Argentine central Andes, two large groups of rocks can be distinguished: a Gondwanic (Paleozoic) basement, and an Andean cover. The basement is constituted by marine sedimentary units, intruded by Upper Paleozoic granitoid rocks. The most important Gondwanic structures, are East verging thrust and related folds. The Andean cover has a volcanic and volcanoclastic origin with some interbedded continental sedimentary rocks. The lower Permo-Triassic unit (Choiyoi Group) is linked to an extensional tectonic event, and a Neogene sequence is connected to a compressional tectonic event that produced the inversion of the previous extensional features. The amount of Andean shortening calculated from cross sections is of about 10%. Most of the shortening in the Andean Cordillera was transferred to the Precordillera through the detachment fault. The up-lift of the Pampeanas area is linked with a new lower detachment fault. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_05677505_v32_n1-2_p51_RodriguezFernandez
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Andean cordillera Andean orogeny Gondwanic orogeny Tectonic inversion Andean orogeny Gondwana orogeny stratigraphy tectonic evolution South America
spellingShingle	Andean cordillera Andean orogeny Gondwanic orogeny Tectonic inversion Andean orogeny Gondwana orogeny stratigraphy tectonic evolution South America Rodríguez Fernández, L.R. Heredia, N. Espina, R.G. Cegarra, M.I. Stratigraphy and structure of the Argentine Central Andes between 30°and 31°S latitude
topic_facet	Andean cordillera Andean orogeny Gondwanic orogeny Tectonic inversion Andean orogeny Gondwana orogeny stratigraphy tectonic evolution South America
description	In a cross-section through the Argentine central Andes, two large groups of rocks can be distinguished: a Gondwanic (Paleozoic) basement, and an Andean cover. The basement is constituted by marine sedimentary units, intruded by Upper Paleozoic granitoid rocks. The most important Gondwanic structures, are East verging thrust and related folds. The Andean cover has a volcanic and volcanoclastic origin with some interbedded continental sedimentary rocks. The lower Permo-Triassic unit (Choiyoi Group) is linked to an extensional tectonic event, and a Neogene sequence is connected to a compressional tectonic event that produced the inversion of the previous extensional features. The amount of Andean shortening calculated from cross sections is of about 10%. Most of the shortening in the Andean Cordillera was transferred to the Precordillera through the detachment fault. The up-lift of the Pampeanas area is linked with a new lower detachment fault.
format	JOUR
author	Rodríguez Fernández, L.R. Heredia, N. Espina, R.G. Cegarra, M.I.
author_facet	Rodríguez Fernández, L.R. Heredia, N. Espina, R.G. Cegarra, M.I.
author_sort	Rodríguez Fernández, L.R.
title	Stratigraphy and structure of the Argentine Central Andes between 30°and 31°S latitude
title_short	Stratigraphy and structure of the Argentine Central Andes between 30°and 31°S latitude
title_full	Stratigraphy and structure of the Argentine Central Andes between 30°and 31°S latitude
title_fullStr	Stratigraphy and structure of the Argentine Central Andes between 30°and 31°S latitude
title_full_unstemmed	Stratigraphy and structure of the Argentine Central Andes between 30°and 31°S latitude
title_sort	stratigraphy and structure of the argentine central andes between 30°and 31°s latitude
url	http://hdl.handle.net/20.500.12110/paper_05677505_v32_n1-2_p51_RodriguezFernandez
work_keys_str_mv	AT rodriguezfernandezlr stratigraphyandstructureoftheargentinecentralandesbetween30and31slatitude AT heredian stratigraphyandstructureoftheargentinecentralandesbetween30and31slatitude AT espinarg stratigraphyandstructureoftheargentinecentralandesbetween30and31slatitude AT cegarrami stratigraphyandstructureoftheargentinecentralandesbetween30and31slatitude
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Stratigraphy and structure of the Argentine Central Andes between 30°and 31°S latitude

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